Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Java Program to cube sum of first n natural numbers
Following is the Java code to cube sum of first n natural numbers −
Example
import java.util.*;
import java.lang.*;
public class Demo{
public static int first_n_nat_no(int val){
int ini_sum = 0;
for (int x=1; x<=val; x++)
ini_sum += x*x*x;
return ini_sum;
}
public static void main(String[] args){
int val = 7;
System.out.println("The sum of cube of first 7 natural numbers is ");
System.out.println(first_n_nat_no(val));
}
}Output
The sum of cube of first 7 natural numbers is 784
A class named Demo defines a static function that takes a value as parameter. Here, an initial sum is defined as 0. Next, a ‘for’ loop is run over values 1 to the value passed as parameter. This is the value up to which the cubes of numbers beginning from 1 need to be computed. Next, every element up to the value is multiplied with itself thrice and returned. Next, the main function defines the value up to which the cube of numbers need to be found. It is calculated and displayed on the console.
Updated on: 04-Jul-2020
374 Views
Advertisements